magmaus3/infohash2base64
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12
README.md
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# infohash ↔ base64 tool
You can check the tool at
<https://magmaus3.codeberg.page/infohash2base64/> (requires javascript)
This tool was made to work with
[an suggestion posted by @toxictenement@lemmy.dbzer0.com](https://lemmy.dbzer0.com/post/1009713)
by [magmaus3](https://magmaus3.eu.org).
You can check the source code by downloading the page
(everything is stored in a single html file),
by going to your browser's devtools or on [Codeberg](https://codeberg.org/magmaus3/infohash2base64).

155
index.html
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<!DOCTYPE html> <!DOCTYPE html>
<html lang="en"> <html lang="en">
<head> <head>
<title>infohash ↔ base64</title> <title></title>
<meta charset="UTF-8"> <meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="viewport" content="width=device-width, initial-scale=1">
<script> <script>
// @license http://www.wtfpl.net/txt/copying/ WTFPL /*
function infohashToBase64(infohash) { * TODO:
// Converts an hex infohash into base64. * - [ ] rewrite functions to not use copied functions
* - [x] add UI
// Convert hex into an byte array * - [x] add style
let byteArray = infohash.replace(/[^0-9a-fA-F]/g, '') * - [ ] make everything not look like made at 0:41 on a phone
*/
function hexToBytes(hexdata) {
// https://stackoverflow.com/a/39396866
var arr = hexdata.replace(/[^0-9a-fA-F]/g, '')
.match(/[0-9a-fA-F]{2}/g); .match(/[0-9a-fA-F]{2}/g);
for(var i = 0; i<byteArray.length; i++) { for(var i = 0; i<arr.length; i++) {
byteArray[i] = parseInt(byteArray[i], 16); arr[i] = parseInt(arr[i], 16);
} }
// Convert byteArray into base64 return arr;
}
function bytesToBase64(byteArray) {
// https://stackoverflow.com/a/11562550
return btoa( return btoa(
String.fromCharCode.apply( String.fromCharCode.apply(
null, new Uint8Array(byteArray) null, new Uint8Array(byteArray)
) )
); );
} }
function base64ToInfohash(b64) {
// Converts a base64 value into a infohash (in a hex form)
// Convert base64 into an byteArray function base64ToArray(base64) {
let binaryString = atob(b64); // https://stackoverflow.com/a/21797381
let byteArray = new Uint8Array(binaryString.length); var binaryString = atob(base64);
var bytes = new Uint8Array(binaryString.length);
for (var i = 0; i < binaryString.length; i++) { for (var i = 0; i < binaryString.length; i++) {
byteArray[i] = binaryString.charCodeAt(i); bytes[i] = binaryString.charCodeAt(i);
} }
// Convert byteArray into hex values return bytes;
}
function bytesToHex(byteArray) {
// https://stackoverflow.com/a/34310051
return Array.from(byteArray, function(byte) { return Array.from(byteArray, function(byte) {
return ('0' + (byte & 0xFF).toString(16)).slice(-2); return ('0' + (byte & 0xFF).toString(16)).slice(-2);
}).join(''); }).join('');
} }
function infohashToBase64(infohash) {
return bytesToBase64(
hexToBytes(infohash)
);
}
function base64ToInfohash(b64) {
return bytesToHex(
base64ToArray(b64)
);
}
// Everything for the UI itself // Everything for the UI itself
// Holds the state of tabs. // Holds the state of tabs.
// Intended values are "encode", "decode" and "about" // Intended values are "encode" and "decode"
let tabOpen = "encode" let tabOpen = "encode"
function switchTab(name) { function switchTab(name) {
// Switches the tab // Switches the tab
// only "encode","decode" and "about" values are supported // only "encode","decode" and "about" values are supported
let url = new URL(window.location)
url.searchParams.set("tab", name)
window.history.replaceState(null, "", url.href)
if (name === "encode") { if (name === "encode") {
document.getElementById("encode").style.display = "block" document.getElementById("encode").style.display = "block"
document.getElementById("decode").style.display = "none" document.getElementById("decode").style.display = "none"
@ -87,40 +106,33 @@
document.getElementById("decodeResult").innerText = base64ToInfohash(urlParams.get("base64value")) document.getElementById("decodeResult").innerText = base64ToInfohash(urlParams.get("base64value"))
} }
}); });
// @license-end
</script> </script>
<style> <style>
body { body {
width: 100vw; height: 100vh;
margin: 0; padding: 0;
display: flex; flex-direction: column; display: flex; flex-direction: column;
justify-content: center; justify-content: center; text-align: center;
align-items: center;
background-color: #10101a; background-color: #10101a;
color: white; color: white;
font-family: monospace; font-family: monospace;
} }
main { main {
background-color: #202025;
padding: 1em; padding: 1em;
border: 1px solid white; border: 1px solid white;
border-radius: 1em; width: 50%; border-radius: 1em;
box-shadow: 0px 5px 15px black, 0px 1px 15px black inset;
} }
input { input {
color: white; color: white;
background-color: transparent; background-color: transparent;
border: 1px solid white; border: 1px solid #50505a;
} }
label { label {
margin-right: 0.5rem; margin-right: 0.5rem;
} }
.tab { .tab {
display: none; /* Default value to keep tabs hidden when JS is not available */
border: 1px solid white; border: 1px solid white;
padding: 1em; padding: 0.5em;
border-radius: 0em 0em 1em 1em; border-radius: 0em 1em 1em 1em;
box-shadow: 0px 5px 15px black, 0px 1px 15px black inset;
} }
.result:empty { display: none;} .result:empty { display: none;}
.result { .result {
@ -130,52 +142,36 @@
border: 1px solid gray; border: 1px solid gray;
border-radius: 1em; border-radius: 1em;
} }
.tab, .tabBar { .tabBar {
display: none; /* Default value to keep tabs hidden when JS is not available */ display: none; /* Default value to keep tabs hidden when JS is not available */
border-collapse: collapse;
} }
.button { .button {
flex: 1;
text-align: center;
padding: 0.5em; padding: 0.5em;
border: 1px solid white; border: 1px solid white;
border-bottom: none; border-bottom: none;
transition: box-shadow 200ms ease; transition: box-shadow 200ms ease;
} }
.leftButton {
border-radius: 1em 0em 0em 0em;
}
.rightButton {
border-radius: 0em 1em 0em 0em;
}
.button:hover { .button:hover {
box-shadow: 0px 5px 25px black; box-shadow: 1px 5px 15px black;
} }
.button:active { .button:active {
background-color: rgba(255,255,255, 0.2); background-color: rgba(255,255,255, 0.2);
} }
a { color: cyan; text-decoration: none;} a { color: cyan; text-decoration: none;}
ul > li {
margin-bottom: 1em;
}
#about, .noscript {
display: block;
max-width: 40rem;
}
</style> </style>
</head> </head>
<body> <body>
<main> <main>
<h1>infohash ↔ base64</h1> <h1>infohash ↔ base64</h1>
<noscript> <noscript>
<div class="noscript"> This tool requires JavaScript to function.
<p>This tool requires JavaScript to function.</p> You can use DevTools in your browser to look at the code (it's intended to be easily readable).
<p>You can use DevTools in your browser to look at the code (it's intended to be easily readable).</p>
</div>
</noscript> </noscript>
<div class="tabBar"> <div class="tabBar">
<div onclick="switchTab('encode')" class="button leftButton">Encode</div> <div onclick="switchTab('encode')" class="button">Encode</div>
<div onclick="switchTab('decode')" class="button">Decode</div> <div onclick="switchTab('decode')" class="button">Decode</div>
<div onclick="switchTab('about')" class="button rightButton">About</div> <div onclick="switchTab('about')" class="button">About</div>
</div> </div>
<div class="tab" id="encode"> <div class="tab" id="encode">
<form> <form>
@ -196,39 +192,18 @@
<div class="result" id="decodeResult"></div> <div class="result" id="decodeResult"></div>
</div> </div>
<div class="tab" id="about"> <div class="tab" id="about">
<h2>About</h2> <form>
<p> <h2>About</h2>
This tool was made to work with <a href="https://lemmy.dbzer0.com/post/1009713">an suggestion posted by @toxictenement@lemmy.dbzer0.com</a> <p>
by <a href="https://magmaus3.eu.org">magmaus3</a>. This tool was made to work with <a href="https://lemmy.dbzer0.com/post/1009713">an suggestion posted by @toxictenement@lemmy.dbzer0.com</a>
</p> by <a href="https://magmaus3.eu.org">magmaus3</a>.
<p> </p>
You can check the source code by downloading the page (everything is stored in a single html file), <p>
by going to your browser's devtools or on <a href="https://codeberg.org/magmaus3/infohash2base64">Codeberg</a>. You can check the source code by downloading the page (everything is stored in a single html file),
</p> by going to your browser's devtools or on codeberg.
<h3>License</h3> </p>
<p>Copyright © 2023 magmaus3 &lt;magmaus3@disroot.org&gt;</p> </form>
<p>This work is free. You can redistribute it and/or modify it under the <div class="result" id="decodeResult"></div>
terms of the Do What The Fuck You Want To Public License, Version 2,
as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.</p>
<h3>How to copy</h3>
<ul>
<li>
On Firefox/Chromium:
<ol>
<li>Right-click on the page</li>
<li>Select <i>Save Page as...</i> or <i>Save as...</i> (or simillar option)</li>
<li>Choose file type as <i>HTML Only</i></li>
<li>Profit!</li>
</ol>
</li>
<li>
Using git:
<ol>
<li><code>git clone https://codeberg.org/magmaus3/infohash2base64</code></li>
<li>Profit!</li>
</ol>
</li>
</ul>
</div> </div>
</main> </main>
</body> </body>